7. FisKE, C. H. and SUBBAROW, Y. The coloirimetric determination of phosphorus. Jour. Biol. Chem. 66: 375400. 1925. 8. GUTHRIE, J. D., HOFFPAUIR, C. L., STANSBURY, M. F. and REEVES, W. A. Survey of the chemical composition of cotton fibers, cottonseed, peanuts, and sweet potatoes; a literature review. U. S. Agr. Research Adm., Southern Regional Research Lab. AIC-61. 1949. (Processed.) 9. HAAS, ...

citric acid has been reported to increase utilization efficiency of dietary phytate-bound phosphorus and protein. objective of this study was to determine the effects of citric acid on growth performance and nutrient retention of broiler chickens fed diets having two levels of non-phytate phosphorus and rice bran. giving a completely randomize design in 2 × 2 × 2 factorial arrangement, 144 broi...

In-situ airborne measurements of trace gases, aerosol size distributions, chemistry and optical properties were conducted over Mexico and the Eastern North Pacific during MILAGRO and INTEX-B. Heterogeneous reactions between secondary aerosol precursor gases and mineral dust lead to sequestration of sulfur, nitrogen and chlorine in the supermicrometer particulate size range. Simultaneous measure...

Leguminous crops, possessing root nodules, fix and utilize atmospheric nitrogen. They are thus not dependent on industrially fixed nitrogen but add up to 30 kg of nitrogen / hectare to the soil and improve its fertility. Access to mineral nitrogen often limits plant growth, and so symbiotic relationships have evolved between plants and a variety of nitrogen-fixing organisms. These associations ...

Importance of mineral cations and organics in gas-aerosol partitioning of reactive nitrogen compounds: case study based on MINOS results S. Metzger, N. Mihalopoulos, and J. Lelieveld Max Planck Institute for Chemistry, Air Chemistry Department, Mainz, Germany University of Crete, Department of Chemistry, Heraklion, Greece Received: 4 October 2005 – Accepted: 21 November 2005 – Published: 19 Dec...

Major advances have been made towards efficient catalytically active model systems for cytochrome P-450 during these last ten years. Some recent developments of this field are described. This include (i) examples of application of these biomimetic systems to compounds of biological interest, (ii) the use of Mn-porphyrins to catalyze the transfer of a nitrogen atom into organic substrates, and (...

A montmorillonite has been intercalated with Al3+ polycations, using concentrated solutions and clay mineral dispersions. The reaction has been assisted by microwave radiation, yielding new intercalated solids and leading to Al-pillared solids after their calcination at 500 °C. The solids were characterized by elemental chemical analysis, X-ray diffraction, FTIR spectroscopy, thermal analyses, ...

The alumina used for the present study was purchased from Union Carbide Corp. as Linde Alumina Polishing Powder Type A. X-ray diffraction and chemical analysis of the powder shows the mineral to be a well-crystallized corundum of high purity(>~ AlzOJ). Morphologically, the powder is constituted of micrometer-sized aggregates composed of smaller particles (between 200 and 500 nm). Nitrogen adsor...

Nitrogen is one of the most important mineral elements for plant growth. We studied the functional roles of Oryza sativa DNA BINDING WITH ONE FINGER 18 (OsDOF18) in controlling ammonium uptake. The growth of null mutants of OsDOF18 was retarded in a medium containing ammonium as the sole nitrogen source. In contrast, those mutants grew normally in a medium with nitrate as the sole nitrogen sour...

Established theory addresses the idea that herbivory can have positive feedbacks on nutrient flow to plants. Positive feedbacks likely emerge from a greater availability of organic carbon that primes the soil by supporting nutrient turnover through consumer and especially microbially-mediated metabolism in the detrital pool. We developed an entirely novel stoichiometric model that demonstrates ...